Question

A binary file "Student.dat" has structure [Admno, Stud_Name, Stream, Fees].
5
i.
Write a user defined function Create File() to input data for a record and add
to Student.dat.
ii.
Write a function CountRec(Stream) in Python which accepts the Stream
name as parameter and count and return number of students in the given
stream are stored in the binary file “Student.dat by".​

Answer 1

Answer:

1)

def File():

   import pickle as p

   with open("Student.dat","wb") as r:

       x=int(input("How many values you want to input="))

       y=[]

       for i in range(x):

           yy=[]

           w=int(input("Enter Admno="))

           ww=input("Enter Stud_Name=")

           www=input("Enter Stream=")

           wwww=int(input("Enter Fees="))

           yy.append(w)

           yy.append(ww)

           yy.append(www)

           yy.append(wwww)

           y.append(yy)

           print()

       p.dump(y,r)

       

File()

2)

def CountRec(Stream):

   import pickle as p

   with open("Student.dat","rb") as r:

       y=p.load(r)

       print(y)

       c=0

       for i in y:

           if i[2]==Stream:

               c=c+1

       print("Nimber of students with stream ",Stream,"are",c)

       

x=input("Enter stream to search=")

CountRec(x)

           

   

Explanation: